Proposes the term archipelagic apron for the smooth, gently sloping surfaces which surround islands and island groups in the central and western Pacific. Seismic observations show the material of the aprons to be largely volcanic, and it is suggested that lava flows from submarine fissures near archipelagos buried the preexisting hilly terrain characteristic of most of the Pacific basin floor. The lavas are overlain by pelagic sediments and turbidity current deposits.

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